Paper-making machine.



Di LSMITH ah a. P. MAM.

;PAPER MAKING MACHINE. APPIQIGMIW -1-*1LED`MAY6, 1910.

Patente May l, l -31.

4UNrrED -strnfrns 'PATENT OFFICE.

DANIEL SMITH, OF DRUMMOND, MARYLAND, AND JOHN P. MAN N, F WASHINGTON,

DISTRICT 0F COLUMBIA,' ASSIGNORS T0 DISTRICT 0F COLUMBIA P APER MANU- FACTURING COMPANY, OF WASHINGTON, DISTRICT 0F. COLUMBIA, A CORPORATION or vine/mm.

p PAIEBPMAKING MACHINE.

wawa

anattachment adapted -to operate on the paper stock 'durin ,the making of the paper, so that the nished product will possess'certain peculiarcharacteristics or ornamentaton.

Our' 'invention relates more especially to an vattachment to Fourdrinier machines, and

the primaryobject of the same is to provide an attachment which may be 'readily applied without altering any part' ofthe construction and'arrangement of such a machine,

and will operate lon jthe surface of -the wet web or layer of ulp somewhere between the slices and couc -rolls so as to disturb the fibers in such manner that the finished paper will have a peculiar ornamentation or mottled appearance the nature of a watermark. In the present instance we accomplish this object by the application of a drag, which imposes moreor less pressure upon the surface of the wet web or layer of pulp while the latter isundergoing the felt-` A -in action due to the shake ofthe wire.

v the following'description we have set i forth the particular construction of the present device, its operation, and practical advantages, .and what we wish to claim as j our invention, and desire to fully protect by Letters-Patent is particularly'stated in the -appended claims.

'In the accompanying drawings, which form 'a part 'o f this spe'cification: Figure 1 is paper-making machine, showing the application 'o f our' invention thereto; Fig. 2 is a .detail plan view of theattachment, as applied., 'jFig. '3 is a Sectional View through the attachment, the paper-stockv and the wire.

Likenumerals of reference indicate like parts in all the ofthe drawings.

Specifieation of Letters Patent.

Patentea' May 16, 1911.

Application fieanay 5, 1910. seria No. 559,569.

In the present instance we have ,shown the attachment as applied -to a conventional form of Fourdrinier machine, and inasmuch as our invention does not 'contemplate a reorganization of such machine, or rather is more in the nature of' an attachment to the same, it is not deemed necessary herein to describe in accurate or precise detaill all of the constituent parts of theI machine, but it willbeI sufiicient for our present purpose to merely refer, in a general way, to those parts which operate in conjunction with our invention. stood that wedo not in the present instance claim as' our invention anything in the construction of the machine itself, aside from the attachment, which latter constitutes the' basis of our claims, as hereinafter set forth.

In .the conventional lform of Fourdrinier paper-making machines the frame` as 5, is supported in a suitable mannerl so that 'a lateral vibratorytiotionv may be -imparted, for

linstance at its ends by pi'voted standards or '11, and at this end of the frame there is also the breast roll 12 around which the wire I 13 passes to the tube-rolls 14, said wire passing from the tube-rolls 14 over suction-boxes 15 to the couch-rolls 16. The machine is also provided. with a deckle-strap17 at ea'ch side, which passes over suitable guide-rollers, as 18, and over a pair of equalizing rollers 19, as is usual. In the drawings we have also shown the machine as provided with a drain trough, 30, suitably supported beneath theupper stretch of the wire, the latter passing'beneath said trough and under and over the guide-rollers 9 in the customary manner.

i The operation of a Fonrdrinier vmachine such as shown'in the drawingaand above .by those skilled invthe art of paper-making,

Furthernore, it Will be underfor the paper pulp or stock from the receivl ing-tropgh IQ is ,fed or distributed on to the wire l by means of the slices 11, andas it s carried alon by said wire over thev tuberolls 14 it is subjected to a shake so that the fibers of the-ffioating Web will undergo the felting action, the water bein .extracted by the auction-boxes 15 so that t e Web will be in proper condition for the action of other parts of the paper-making machine, as will be understood.

The machine shown is only one formof, Fourdrinier machine, but it Will be appar-l ent, hereinafter, that we may apply'our inventionto. many different formsiof papermaking machines. v

In carrying out our invention we subject the paper stock or layer of pulp to the effect of a draw which act'supon the surface thereof, in the .present-instance thel uppermostsurface, so as to vdisturb or roll the fibers to a more 'or less extent, whercby they' are` massed 'o r grouped irregularly and so that the distinct masses o r groups so formed'will not be obliterated by the subsequent or continued felting action of the shaking Wire. ,Of course, as will be obvious this massing, grouping, or. rolling of thel fibers of the paper pulp ,may be produced by the application`of any device which operates to drag over the. surface of the layer of pulpxand as w'ill beapparent, also, the manner in which the fibers are disturbed or affected will depend upon the nature 'of the `drag,,as well as the weight of the same. In the present instance we employ a strip or sheet of material, 21, as felt, and support one end of the same above' the layer of pulp, 4, so that the ot-her or free end of said strip or sheet will lie upon-the layer of pulpand drag over the surface of the same. If desired additional weight may be given to that portionfof the strip or sheet which engages the layer 'of pulp, as for instance by means of a strip 22, attached to said strip or sheet near the outer or free end of the same, asshown inthe drawings.

The drag or strip of felt may be supported lin any Asuitable manner, a simple form being showmwhichconsists in attaching oneend, `of the feltfstrip to'a cross-bar 23, with the e ndslof the latter projecting sufliciently to rest. upon' the topyrail ,51 at each side-of the supporting-frame of the machine, the ends -of the crossbar being each engaged by a bracket-platev 24,1`1or any other suitable' means Zfor holding the bar in place.1 The bracketpltes'are secured 'upon the'tp-rails by Sci'bw 25,/ so that said brackets may be shifted to any point along the rails' from the.

spect to the making of the paper; In

'the practice ofour invention we-.; l'avefound` that good results are obtained by'pla'cing the drag at a'point'wherethe wet web, or layer of pulp has undergone felting action to some extent, rather than close' up to 'i -As hereinbefore, explained, the operation ofthe drag results n rolling or lmassing some of the fibers in irregular lines or, groups,- somewhat in the manner indicated in Fig. 2 of the drawings, and as these irregular lines 'or grou s-are not obliterated by the subsequentfimshing or calendering the paper produced has an ornamental surface, or is mottl'ed or grained' in the nature of a water-mark, suchmottling or graining varying to a considerablejextent but retaning certain peculiar characteristics which cannot bel obtained in' any other way, so far as we are aware.

Having thus described our invention, we claim: i .1. Anlattachment for paper-making machines, comprising means engaging a surface of the layer of q lp and dragging thereover to'displace ag regate some of the fibers, substantiathe purpose set forth. 4

'as s own and for 2. An attachment for Fourdrinier paperi making machinesl comprising a strip of ina-.

so as to drag thereover, substantially as shown and for the purpose setrforth.

3. In a Fourdrinier paper-making machine, the combination with the moving wire carrying alayer of pulp, of a strip of, fiexible material, ,and means forsupporting said strip so that a JIportion thereof will drag over .the surface o the layer of pulp, substantially as shown and for the purpose set forth.

4. 'In a Fourdrinier paper-making machine, the 'combination with theV moving Wire carrying a layer of pulp, of a strip of fiex'- ble fabric supported at one end so'thatt the free end thereof Will drag over the layer, ofl pulp, substantially as shown and for the purpose set forth.

5. In a Fourdrinier paper-making machine, the combination' with the moving wire bar-,a .fabric strip attached to the supporting bar so that the'free portion ofsa strip,- wiil .drag over the layer of pulp, and means 1 for' holding the supporting-bar rigidly in place, substantially as shown and for the purpose setforth.

' terial resting upon the moving layer of pulp loo llao

11s l carrying atlayer of pulp, of a supporting- 7. In a Fourdrinier paper-making I nato hold the supporting-bar in place, sub-. chine, the combination withv the top-fails; stantially as shown and describe moving wire carrying a layer of pulp, of a ,v i DANIEL A. SMITH. supportng-bar restng at ts ends upon the i I i 5 top-fails, 'a strip of mgterigil attached to the JOHN P' MA'NN' supporting-bar's'o that the free portion of Witnesses: 'said strip will drag over the layer of pulp, NELL S. BROWN, i

and bracket-plates-attached to the. top-fails ROBERT D. MARSHALL. 

